Standardized Precipitation Index Table

High Plains Climate Division

Texas, Climate Division 01

Precipitation Data Table

Time Scale in Months (As of the end of May 2025)
1 2 3 4 5 6 7 8 9 10 11 12 15 18 24 30 36 48 60 72
Accumulated Precipitation (in.) 2.77 5.19 5.56 5.59 5.9 5.92 9.54 9.71 11.86 13.7 15.77 18.55 22.17 25.18 35.74 42.5 51.9 64.81 78.45 95.58
Accumulated Precipitation Departure from Normal (in.) 0.22 1.34 0.86 0.3 0.1 -0.52 2.32 0.83 0.86 0.29 -0.09 0.04 -1.03 0.24 -1.27 -0.94 -3.62 -9.24 -14.2 -15.64
Accumulated Precipitation Percent of Average 109 135 118 106 102 92 132 109 108 102 99 100 96 101 97 98 93 88 85 86
Accumulated Precipitation Percentile (non-exceedance) 63.3 79.5 70.5 60.8 56.9 46.3 82 64.6 63.8 56.7 52.2 53.4 44 54.5 43.9 46.5 33.3 14 5.5 4.8
Standardized Precipitation Index 0.34 0.82 0.54 0.27 0.17 -0.09 0.91 0.37 0.35 0.17 0.06 0.09 -0.15 0.11 -0.15 -0.09 -0.43 -1.08 -1.6 -1.67